Johnson, R. L., Stevens, M. R., Johnson, L. A., Robbins, M. D., Anderson, C. D., Ricks, N. J., & Farley, K. M. (2016). Molecular and morphological evidence for Penstemon luculentus (Plantaginaceae): A replacement name for Penstemon fremontii var. glabrescens. PhytoKeys.
Chicago ZitierstilJohnson, Robert L., Mikel R. Stevens, Leigh A. Johnson, Matthew D. Robbins, Chris D. Anderson, Nathan J. Ricks, und Kevin M. Farley. "Molecular and Morphological Evidence for Penstemon luculentus (Plantaginaceae): A Replacement Name for Penstemon fremontii Var. Glabrescens." PhytoKeys 2016.
MLA ZitierstilJohnson, Robert L., et al. "Molecular and Morphological Evidence for Penstemon luculentus (Plantaginaceae): A Replacement Name for Penstemon fremontii Var. Glabrescens." PhytoKeys 2016.